should i take a magnesium supplement?
Should I take a magnesium supplement? The simple answer to this question is: Most likely, yes. Scientific evidence suggests that many people are at risk of magnesium deficiency, even those consuming a healthy diet. There are many reasons for this, most of which are out of our control. Given the critical importance of magnesium in the human body, and the significant health risks that accompany even a subclinical magnesium deficiency, regular supplementation with a high-quality dietary supplement is a wise investment in your health.
What is Magnesium?
Magnesium is one of the most abundant minerals, both in the earth and inside the human body. Most magnesium in the body is found inside cells, rather than in the blood, and it is especially concentrated in the muscles and bones. In the body, magnesium carries a positive charge, and is therefore referred to as an ion or electrolyte.
The recommended intakes of magnesium have been determined and are based on age and gender. These values are known as the dietary reference intakes (DRI’s). Recently, it has been suggested that the DRI’s for magnesium are too low because they haven’t been adjusted for rising body weights. The new estimates recommend an additional intake for adults of between 60-235mg magnesium per day beyond what is shown in table 1.
what does magnesium do in the body?
Magnesium is involved in virtually every cellular metabolic and biochemical process in the human body. As a cofactor or activator for over 800 chemical reactions, magnesium regulates everything from metabolism to protein synthesis, to DNA repair and synthesis. It is also involved in conveying messages between molecules within the cell as well as in regulating cell replication.
what are good sources of magnesium?
Magnesium is found in many foods, both plant and animals. Some good sources of magnesium are:
- Green leafy vegetables
- Legumes
- Nuts
- Seeds
- Whole grains
Good sources of magnesium should contain around 40-80mg per serving. Meat, dairy and fruit also contain some magnesium but at lower amounts. A general rule of thumb is that the more highly processed a food, the less magnesium it will contain (unless it has been fortified).
Although there are many food sources of magnesium, a drastic loss of magnesium from agricultural soil over the last century has led to a decrease in the magnesium content of plant foods due to their inability to absorb sufficient magnesium from the earth. For example, the magnesium content of vegetables has decreased by 80-90% over the last century. As a result, supplementation with magnesium may be necessary to avoid deficiency.
What is the prevalence of Magnesium deficiency?
There are two types of nutrient deficiencies, frank and subclinical. Frank deficiencies have obvious signs, while subclinical deficiencies do not. Frank deficiencies of magnesium are rare because the kidneys can limit its excretion. But subclinical deficiencies are extremely common, since over half of the US population don’t consume the recommended amount.
In fact, according to a research article in the Open Heart medical journal, “the evidence in the [scientific] literature suggests that subclinical magnesium deficiency is rampant and one of the leading causes of chronic diseases including cardiovascular disease and early mortality and should be considered a public health crisis.”
What are the causes of Magnesium deficiency?
As already described, two of the main causes of magnesium deficiency are (1) low intake of dietary magnesium, and (2) a substantial loss of magnesium from agricultural soil causing a decrease in the magnesium content of foods. These two issues will be compounded, such that even when people attempt to consume sufficient dietary magnesium, they may be unable to.
There are also several other factors that increase the risk of magnesium deficiency. These include:
Magnesium also interacts with other nutrients, which can increase the risk of deficiency. For example, taking high doses of vitamin D can increase the loss of magnesium from the body, while taking high doses of zinc can interfere with magnesium absorption. High doses of fiber can also interfere with magnesium absorption.
What are the health risks of Magnesium deficiency?
Because of its nearly ubiquitous role in the body’s processes, low levels of magnesium can create widespread physiological dysfunction. And because of the widespread incidence of low magnesium intake, magnesium deficiency is recognized as an important global concern.
A frank magnesium deficiency will manifest with clinical signs, including:
- Low appetite
- Nausea and vomiting
- Fatigue and weakness
- Muscle spams or tremors
- Abnormal heart rhythm
- Convulsions
- Psychiatric disturbances
But because the kidneys regulate the excretion of magnesium from the body, it’s rare to have magnesium be depleted to the point where these potentially life-threatening symptoms occur. Far more common is subclinical magnesium deficiency, which often does not have obvious signs.
Because it’s so easy to under consume magnesium, and since the signs of subclinical magnesium deficiency are hard to spot, it often extends over time leading to long-term adverse complications. These include a wide range of health problems and chronic diseases, including:
- Cardiovascular diseases (atherosclerosis, hypertension, stroke)
- Diabetes
- Migraines
- Osteoporosis
- Asthma
- Metabolic disorder
- Alzheimer’s Disease
- Parkinson’s Disease
- Premenstrual Syndrome
- Dysmenorrhea
These conditions have potentially devastating consequences, which makes magnesium a critical nutrient of concern for public health.
How could taking a magnesium supplement help me?
There are both long-term and short-term benefits to ensuring adequate magnesium intake, which for many people, will require taking a magnesium supplement.
As just described, there is a long list of health problems and chronic diseases associated with a long-term subclinical magnesium deficiency, many of which can be helped by taking a magnesium supplement.
Can I take too much magnesium?
Magnesium toxicity is mostly seen with consumption of high doses of magnesium containing laxatives and antacids. Consumption of more than 5000mg per day can cause toxicity, with symptoms including low blood pressure, nausea, vomiting, muscle weakness, and even cardiac arrest. It would be nearly impossible to consume this much magnesium through dietary supplements, which usually contain less than 300mg per serving, and totally impossible through food. Because the excretion of magnesium is regulated by the kidneys, it is difficult to take too much, and is not a concern except with consumption of magnesium containing medications.
How do I choose a Magnesium supplement?
Read the ingredients – Most dietary supplement will contain both active and inactive or “other” ingredients. You need to pay attention to both.
The active ingredients are the ones that you are looking for; for example, a magnesium supplement will contain at least one form of magnesium as the active ingredient. Some supplements, like multi-vitamins, have many active ingredients. Usually, these are vitamins, minerals, of phytochemicals derived from plants. Although this information may be hard to find, it’s helpful to know where these active ingredients are sourced from. Naturally sourced ingredients are always better than artificial ones.
The inactive ingredients are usually there to: (1) provide bulk (filler), (2) hold the product together (binding agents, coatings), (3) add flavor or sweetness, or (4) keep the product from clumping together (flow enhancers). Sometimes this list is long, and it’s often where some undesirable ingredients sneak in, such as potassium sorbate, artificial colors, or titanium dioxide. It’s best to keep this list short and naturally sourced.
Verify product purity – Only choose high quality products that verify their purity via an unbiased chemical analysis performed by a third-party lab. These analyses should be reported in a Certificate of Analysis (COA) that is readily available to consumers, often through a QR code link. COA’s should be available for each batch of products, and will measure contaminants such as heavy metals, microbes, and pesticides.
Consider the form(s) of magnesium in the supplement – There are several different forms of magnesium that are included in dietary supplements, each of which has unique properties. Look for ones that are bioavailable and easy on digestion. The forms of magnesium that are most likely to cause diarrhea are magnesium chloride, carbonate, oxide, and gluconate. Magnesium malate shows high bioavailability compared to the commonly supplemented forms of magnesium oxide and magnesium citrate. Other organic forms of magnesium such as magnesium glycinate and magnesium orotate also show high bioavailability. Some forms of magnesium have also shown unique health benefits; for example, magnesium orotate helps with cardiovascular and gut health. While all magnesium supplements can help to prevent magnesium deficiency, some forms may be better suited to your unique needs.
Choose the supplement form you prefer – Supplements come in three main forms: capsules/tablets, powders, or liquids. Which one you choose is really a personal preference. Powders and liquid can be added to liquids, like smoothies, and are a great option if you don’t like swallowing pills.
Fringe Essentials Magnesium Powder
The Fringe Essentials Magnesium Powder contains three forms of magnesium: orotate, malate, and glycinate, at 173mg total and 41% of the recommended Daily Value. These forms of magnesium have been shown to be better absorbed into the body, and they’re easily digested. Each one has unique health benefits that make them well suited to not only ensure sufficient magnesium intake, but also to reap a wide range of health benefits. Here’s what they do:
Magnesium glycinate is a standout in helping to reduce anxiety, promote relaxation, support deep sleep, reduce muscle tension, and balance mood.
Magnesium orotate is one of the best forms of magnesium to consume for heart health. It’s been shown to help with hypertension and heart disease, and to reduce risks of heart attacks. It also supports gut and mental health and helps with exercise recovery. It may even be helpful in diabetes and Alzheimer’s Disease.
Magnesium malate is great for chronic pain, inflammation, energy production, and muscle tension and recovery.
The other ingredients in Fringe magnesium powder are all natural, and include non-GMO inulin to help with dosing, organic monkfruit extract for a bit of natural sweetness, and vitamin C for an antioxidant boost. Simply mix 1 scoop of magnesium into your water, smoothie, or favorite beverage 1-2 times per day.
about the author
Dr. Genevieve Newton, DC, PhD spent close to 20 years as a researcher and educator in the field of nutritional sciences before joining Fringe as its Scientific Director. Gen’s job is to “bring the science” that supports Fringe’s products and education. She is passionate about all things Fringe, and is a deep believer in healing body, mind and spirit using the gifts of the natural world.
The contents in this blog; such as text, content, graphics are intended for educational purposes only. The Content is not intended to substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your healthcare provider.
